Diagnostic method for diseases by screening for hepcidin in...

C - Chemistry – Metallurgy – 07 – K

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Details

C07K 16/18 (2006.01) A61B 1/00 (2006.01) G01N 33/53 (2006.01) G01N 33/563 (2006.01)

Patent

CA 2506668

The present invention concerns methods and kits for diagnosing a disease condition characterized by non-physiological levels of hepcidin protein, including prohepcidin and fragments thereof, comprising obtaining a tissue or fluid sample from a subject; contacting the sample with an antibody or fragment thereof that specifically binds to a polypeptide corresponding to the mid-portion or C terminus of a hepcidin protein, and quantifying the hepcidin level using an assay based on binding of the antibody and the polypeptide; wherein the non-physiological level of hepcidin is indicative of the disease condition. The present invention also concerns diagnostic methods and kits for applications in genetic technological approaches, such as for overexpressing or downregulating hepcidin. The present invention further concerns therapeutic treatment of certain diseases by treatment of subjects with hepcidin and agonists or antagonists of hepcidin.

La présente invention concerne des méthodes et des kits pour diagnostiquer une maladie caractérisée par des niveaux non physiologiques de protéine d'hepcidine, comprenant de la prohepcidine et des fragments de celle-ci. Les méthodes consistent à obtenir un échantillon de tissu ou de fluide d'un sujet, à mettre en contact l'échantillon avec un anticorps ou un fragment de celui-ci qui se lie de manière spécifique à un polypeptide correspondant à la partie médiane ou à la terminaison C d'une protéine d'hepcidine, puis à quantifier le niveau d'hepcidine au moyen d'un dosage basé sur la liaison de l'anticorps et du polypeptide. Le niveau non physiologique d'hepcidine indique une maladie. La présente invention concerne également des méthodes diagnostiques et des kits pour des applications dans le cadre d'approches technologiques en génétique, notamment pour la surexpression ou la régulation par réduction d'hepcidine. En outre, cette invention concerne un traitement thérapeutique de certaines maladies qui consiste à traiter des sujets avec de l'hepcidine et des agonistes ou des antagonistes d'hepcidine.

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